Tony O'Neill leaning in amongst enormous Goliath Rhubarb plants on his South Wales allotment, inspecting the leaves which tower over him in the growing bed

How to Plan a Vegetable Garden from Scratch

ByTony O'Neill

Most people start a vegetable garden by going to the garden centre, buying what looks good, and finding somewhere to put it. That approach works occasionally. More often it leads to a crowded bed, a failed crop, and the feeling that vegetable growing is harder than it looks.

It is not hard. But it does require a bit of thinking before you start digging. Planning a vegetable garden is not about creating a perfect document. It is about making a few good decisions upfront so you are not firefighting problems all season.

This is the process I use and the one I have taught to thousands of growers through Simplify Gardening. It works whether you have a large allotment, a small back garden, or a handful of raised beds.

Start with the space you actually have

Before you decide what to grow, look honestly at what you are working with. Walk around your outdoor space at different times of day and notice where the sun falls. Most vegetables need at least six hours of direct sunlight to produce well. Leafy crops like lettuce and spinach will tolerate four hours. Root vegetables and brassicas sit somewhere in between.

Mark out the sunniest areas. These are where your tomatoes, courgettes, beans, and anything fruiting will go. The shadier corners are better left for herbs, salad leaves, or not used for food growing at all.

Also look at access to water. A vegetable bed at the far end of the garden, away from any tap or water butt, is a bed that will get neglected in a dry spell. Keep your growing area close enough to make watering convenient, not a chore.

Decide how much you can realistically manage

This is the step most people skip. They plan for the garden they want, not the garden they have time to maintain.

A well-managed 4×4 metre bed will produce more food than a neglected 10×10 metre plot. Start smaller than you think you need. You can always expand next year once you have a feel for what the work actually involves.

As a rough guide for a first-year grower:

  • One or two raised beds (approximately 1.2 metres by 2.4 metres each) is a manageable starting point
  • A single allotment plot of 10 rods (250 square metres) is ambitious for a beginner without experience of that scale
  • Container growing on a patio is a legitimate and productive option if space is limited

Be honest with yourself about how much time you can give it. An hour a week during the growing season is enough for a well-planned small bed. A larger plot needs more.

Choose what you actually want to eat

A lush mixed bed of red and green lettuce varieties at Tony O'Neill's allotment garden in South Wales, with repurposed steel fire station bed headboards positioned as netting supports along the bed, wood chip paths, and further growing beds and polytunnel visible behind
A thriving mixed lettuce bed at Tony O’Neill’s allotment in South Wales, with steel bed headboards positioned as netting and fleece supports along the bed edges. These headboards came from South Wales Fire and Rescue Service when the beds were replaced, and Tony repurposed them for the allotment rather than letting them go to waste. They make excellent rigid supports for netting and fleece. It is a typically resourceful solution from someone who has spent decades finding practical ways to grow more with what is available. Tony documents this kind of ingenuity at tonyoneill.com and through Simplify Gardening.

It sounds obvious, but every year, growers fill beds with vegetables they do not particularly like because they are easy to grow or because someone told them to. Grow what you will eat. There is no point harvesting a glut of courgettes if the sight of them fills you with dread.

Write a list of the vegetables your household eats the most. Then check which of those are realistic for your space, climate, and experience level. That intersection is your starting point.

For most beginners, a good first-year list includes:

  • Salad leaves (fast, productive, forgiving)
  • Radishes (ready in three to four weeks, great for confidence)
  • Courgettes (prolific and low maintenance)
  • French beans or runner beans (productive over a long season)
  • Tomatoes (require more attention but are deeply rewarding)
  • Potatoes (satisfying, good for breaking in new ground)

Avoid starting with parsnips, celery, or cauliflower in your first year. These crops are more demanding and more likely to disappoint.

Think about succession planting from the start

One of the most common problems beginners run into is a glut followed by a gap. Everything is ready at once, then nothing for weeks. Succession planting is how you avoid this.

Instead of sowing an entire packet of salad leaves at once, sow a short row every two to three weeks. Instead of planting all your lettuce in April, plant a third in April, a third in May, and a third in June. You get a continuous harvest rather than a single overwhelming flush.

Plan this into your calendar before the season starts. Note down when you want to harvest each crop, then work backwards to figure out when to sow or plant.

Tony O'Neill writing a plant label for a freshly sown large seed tray inside his polytunnel in South Wales, with stacked cell trays, a glass jar of seeds, plant labels, and a compost tub arranged on the potting bench behind him
Tony O’Neill is writing the label for a freshly sown seed tray inside his polytunnel in South Wales. Labelling every tray immediately after sowing is one of those habits that separates an organised grower from a frustrated one. By mid-spring, an unlabelled tray is almost impossible to identify with confidence, and mixing up varieties at transplanting can affect an entire season’s growing. This is the kind of practical, unglamorous discipline that Tony documents and teaches at tonyoneill.com and through Simplify Gardening.

Plan your beds around crop rotation

Crop rotation means not growing the same family of vegetables in the same piece of ground year after year. It reduces the buildup of soil-borne diseases and pests that are specific to particular plant families.

The four main groups to rotate are:

  • Brassicas (cabbage, broccoli, kale, Brussels sprouts)
  • Legumes (peas, beans)
  • Root vegetables (carrots, parsnips, beetroot)
  • Potatoes and tomatoes

Each group moves to a different bed each year on a four-year cycle. It is not complicated once you see it written down, but it does need to be planned. If you have only two beds, you can still rotate by alternating heavy feeders and light feeders each year.

The simplest way to track this over multiple seasons is to use a tool like GrowTrack, which logs what you grew where and helps you plan rotation without having to remember it all yourself.

Prepare the soil before you plant anything

Before your first season, dig over the bed and incorporate well-rotted compost or manure. This improves drainage in heavy soils, improves water retention in sandy soils, and feeds the soil biology that plants depend on. It is the single most productive thing you can do before putting a seed in the ground.

If you are building raised beds, fill them with a mix of topsoil and compost rather than relying on the existing ground. This gives you full control over the growing medium from the start.

Write it down, even roughly

You do not need a detailed spreadsheet. A simple sketch on paper or a note on your phone is enough. What matters is that you have a record of what you planted, where you planted it, and when.

This information becomes valuable in year two. You will know what worked, what did not, what bolted before you got to it, and where the slugs did the most damage. Without a record, you start from scratch every spring. With one, each season builds on the last.

A dedicated garden tracking tool like GrowTrack makes this easy. It holds your planting records, tracks your beds, and lets you look back at previous seasons to make better decisions going forward.

Accept that the first year is a learning year

Every experienced grower has a long list of first-year failures. Seedlings that damped off. Plants that bolted in a heatwave. A courgette plant that took over an entire bed. A late frost that killed off tomatoes that went out too early.

These are not signs that you are doing it wrong. They are the normal experience of learning to grow food in a specific place, with specific soil and weather. The gardeners who stick with it are not the ones who get everything right in year one. They are the ones who write it down and try again differently in year two.

Plan well, start small, keep records, and give yourself room to learn. That is the honest foundation of a productive vegetable garden.

Screenshot of the GrowTrack Season Overview screen showing 8 active plantings, 8 of 17 gardens and beds active, a frost warning weather risk alert, Key Actions This Week panel with ready to harvest and ready to transplant status, an all clear on beds needing attention, and a recent harvests panel showing tomato and other yields by date and weight
The GrowTrack Season Overview screen shows a live picture of what is happening in the garden right now. At a glance, the grower can see 8 active plantings, their beds and garden status, a frost warning weather risk, key actions for the week, including what is ready to harvest and transplant, bed health status showing all clear, and recent harvests with weights and dates. Season Overview is not a generic gardening calendar. It looks at the grower’s specific location, time of year, current conditions, and the crops they are growing to surface timely guidance, seasonal risks, and practical actions week by week. Instead of fixing gardening to rigid dates, it adapts to the reality of the season as it unfolds.

Tony O’Neill is a vegetable growing expert, award-winning author, and founder of GrowTrack Systems Ltd. He has been growing food since 1981 and shares practical growing advice through Simplify Gardening. His flagship book, Simplify Vegetable Gardening, is a No.1 bestseller in the UK and the USA.

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